Gerald Pfeifer : wrc: Avoid undefined behavior in the FreeBSD case.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: f221465a3c689e6c20c29b99f9c9f6a50ec7ff38
URL:    https://gitlab.winehq.org/wine/wine/-/commit/f221465a3c689e6c20c29b99f9c9f6a...

Author: Gerald Pfeifer 
Date:   Fri Jan 13 13:10:55 2023 +0100

wrc: Avoid undefined behavior in the FreeBSD case.

init_argv0_dir has a special case for FreeBSD where one branch led to
an unitialized variable and undefined behavior. Initialize properly.

---

tools/wrc/wrc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/wrc/wrc.c b/tools/wrc/wrc.c
index a1e59c3d2b3..9f231603ad4 100644
--- a/tools/wrc/wrc.c
+++ b/tools/wrc/wrc.c
@@ -305,6 +305,8 @@ static void init_argv0_dir( const char *argv0 )
     char *path = xmalloc( path_size );
     if (!sysctl( pathname, ARRAY_SIZE(pathname), path, &path_size, NULL, 0 ))
         dir = realpath( path, NULL );
+    else
+        dir = NULL;
     free( path );
 #else
     dir = realpath( argv0, NULL );